Agricultural biomass waste can be used for producing adsorbents, because it is as low cost material and friendly for environment. This research aimed to study adsorbent preparation from pomelo peel by chemical activation with 0.1 M HNO3 for investigating the removal efficiency and adsorption isotherm for adsorption of Pb(II) in synthetic solution. The batch experiment was carried out at various initial concentrations (10, 20, 40, 60, 80, 100, 120, 140 mg/L ) by using adsorbent dose of 0.3 g and contact time of 30 min. The experimental conditions were implemented at solution pH 5-6, rotary-shaker speed of 120 rpm, particle size of activated pomelo peel at less than 0.2 mm and at room temperature. The results show that the maximum removal efficiency of Pb(II) was 96.12 % at initial concentration of 10 mg/L. Experimental equilibrium data for adsorption were analyzed by the Langmuir and Freundlich isotherm models. The best fit was achieved with the Langmuir isotherm equation with maximum adsorption capacity of 909.09 mg/g. The study results can be a guideline for removal of Pb(II) in industrial wastewater.
Sasiwimol Chanmalee, Mahidol University, Thailand
Pisit Vatanasomboon, Mahidol University, Thailand
Chaowalit Warodomrungsimun, Mahidol University, Thailand
Stream: Environmental Sustainability & Environmental Management: Freshwater, Oceans and Seas
This paper is part of the ACSEE2016 Conference Proceedings (View)
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